JPS57173779A - Frost sensor - Google Patents

Frost sensor

Info

Publication number
JPS57173779A
JPS57173779A JP6016081A JP6016081A JPS57173779A JP S57173779 A JPS57173779 A JP S57173779A JP 6016081 A JP6016081 A JP 6016081A JP 6016081 A JP6016081 A JP 6016081A JP S57173779 A JPS57173779 A JP S57173779A
Authority
JP
Japan
Prior art keywords
frost
receiving element
light receiving
light emitting
emitting element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP6016081A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6367648B2 (enrdf_load_stackoverflow
Inventor
Yasukuni Yamane
Nobutoshi Gako
Chuji Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to JP6016081A priority Critical patent/JPS57173779A/ja
Publication of JPS57173779A publication Critical patent/JPS57173779A/ja
Publication of JPS6367648B2 publication Critical patent/JPS6367648B2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/02—Detecting the presence of frost or condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/11—Sensor to detect if defrost is necessary
    • F25B2700/111—Sensor to detect if defrost is necessary using an emitter and receiver, e.g. sensing by emitting light or other radiation and receiving reflection by a sensor

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
JP6016081A 1981-04-20 1981-04-20 Frost sensor Granted JPS57173779A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6016081A JPS57173779A (en) 1981-04-20 1981-04-20 Frost sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6016081A JPS57173779A (en) 1981-04-20 1981-04-20 Frost sensor

Publications (2)

Publication Number Publication Date
JPS57173779A true JPS57173779A (en) 1982-10-26
JPS6367648B2 JPS6367648B2 (enrdf_load_stackoverflow) 1988-12-27

Family

ID=13134114

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6016081A Granted JPS57173779A (en) 1981-04-20 1981-04-20 Frost sensor

Country Status (1)

Country Link
JP (1) JPS57173779A (enrdf_load_stackoverflow)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49134386A (enrdf_load_stackoverflow) * 1972-10-23 1974-12-24
JPS54109600U (enrdf_load_stackoverflow) * 1978-01-19 1979-08-01

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49134386A (enrdf_load_stackoverflow) * 1972-10-23 1974-12-24
JPS54109600U (enrdf_load_stackoverflow) * 1978-01-19 1979-08-01

Also Published As

Publication number Publication date
JPS6367648B2 (enrdf_load_stackoverflow) 1988-12-27

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